KR20120067935A - Bearing/hub unit for a motor-vehicle wheel - Google Patents

Bearing/hub unit for a motor-vehicle wheel Download PDF

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Publication number
KR20120067935A
KR20120067935A KR1020110127399A KR20110127399A KR20120067935A KR 20120067935 A KR20120067935 A KR 20120067935A KR 1020110127399 A KR1020110127399 A KR 1020110127399A KR 20110127399 A KR20110127399 A KR 20110127399A KR 20120067935 A KR20120067935 A KR 20120067935A
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KR
South Korea
Prior art keywords
bearing
outer ring
hub unit
sealing
hub
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KR1020110127399A
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Korean (ko)
Inventor
안드레아 세라피니
에드워드 화이트 라델
Original Assignee
아크티에볼라게트 에스케이에프
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Publication of KR20120067935A publication Critical patent/KR20120067935A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/12—Torque-transmitting axles
    • B60B35/18—Arrangement of bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/723—Shaft end sealing means, e.g. cup-shaped caps or covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0047—Hubs characterised by functional integration of other elements
    • B60B27/0068—Hubs characterised by functional integration of other elements the element being a sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/28—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with two or more rows of rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/768—Sealings of ball or roller bearings between relatively stationary parts, i.e. static seals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0078—Hubs characterised by the fixation of bearings
    • B60B27/0084—Hubs characterised by the fixation of bearings caulking to fix inner race
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0094—Hubs one or more of the bearing races are formed by the hub
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles

Abstract

PURPOSE: A bearing/hub unit for a vehicle wheel is provided to prevent the detection accuracy reduction of an encoder for bearing driving by protecting elements from foreign materials like dust, moisture, sand permeation into the gap of an outer ring and a protection cover. CONSTITUTION: A bearing/hub unit for a vehicle wheel(1) comprises a fixed bearing outer ring(2), an inner rotary hub(10), a bearing inner ring(11), an encoder(16), a protection cover(30), a static sealing element(50), and a first sealing part. The fixed bearing outer ring is installed in a lateral surface(5) in the widthwise of a rotary shaft(A). The inner rotary hub is installed into radial direction. The bearing outer ring and the bearing inner ring are fixed in a hub and form a hollow(12). The encoder is installed in the hollow. The protection cover is installed in the outer ring for protecting an encoder and sealing the hollow. The static sealing element is coupled with the outer side of the protection cover. The first sealing part is installed between the outer ring and a protection cover.

Description

자동차 휠용 베어링/허브 유닛{BEARING/HUB UNIT FOR A MOTOR-VEHICLE WHEEL}Bearing / hub unit for automobile wheels {BEARING / HUB UNIT FOR A MOTOR-VEHICLE WHEEL}

본 발명은 자동차 휠용 베어링/허브 유닛에 관한 것이다. The present invention relates to a bearing / hub unit for an automobile wheel.

구체적으로, 본 발명은 회전축을 갖는 베어링/허브 유닛에 관한 것으로, Specifically, the present invention relates to a bearing / hub unit having a rotating shaft,

-회전축에 대해 가로방향으로 측면 표면에 의해 획정된 고정식 베어링 외측 링,A fixed bearing outer ring defined by the side surface transverse to the axis of rotation,

-반경방향의 내측 회전식 허브,Radially inner hub,

-임의의 밀봉 장치가 없는 공동을 외측 링과 함께 형성하고, 허브에 고정된 베어링 내측 링,A bearing inner ring formed with the outer ring, the cavity without any sealing device being fixed to the hub,

-내측 링 상의 외측에 고정되고, 공동 내측에 배열된 자성 인코더 및A magnetic encoder fixed outside on the inner ring and arranged inside the cavity and

-공동을 밀폐하고 인코더를 보호하기 위하여 측면 표면에 대해 축방향으로 접하는 방식으로 외측 링 상에 장착되고 비강자성 재료로 제조된 보호 커버를 포함한다.
A protective cover mounted on the outer ring and made of non-ferromagnetic material in a manner axially in contact with the side surface for sealing the cavity and protecting the encoder.

전술된 유형의 베어링/허브 유닛은 자동차의 각각의 업라이트 내측에 설치되며, 시간이 지남에 따라 공동을 충전하고 외측 링과 보호 커버 사이로 침투되는 먼지, 모래 및 물과 같은 외부 물질의 작용에 노출되어 베어링의 정확한 작동과 인코더로부터 송신된 신호의 정확한 판독이 저하된다.
Bearings / hub units of the type described above are installed inside each upright of the vehicle and are exposed to the action of external materials such as dust, sand and water that fill the cavity over time and penetrate between the outer ring and the protective cover. The correct operation of the bearings and the correct reading of the signal transmitted from the encoder are degraded.

본 발명의 목적은 전술된 단점을 단순하고 신뢰성 있는 방식으로 해결할 수 있는, 자동차 휠용 베어링/허브 유닛을 제공하는 데 있다.
It is an object of the present invention to provide a bearing / hub unit for an automobile wheel, which can solve the aforementioned disadvantages in a simple and reliable manner.

본 발명에 따라서, 자동차 휠용 베어링/허브 유닛이 제공되며, 상기 유닛은 첨부된 청구항에 기술된 특징들을 갖는다.
According to the invention, a bearing / hub unit for an automobile wheel is provided, which unit has the features set forth in the appended claims.

이제, 본 발명은 실시예의 비-제한적인 예를 나타내는 첨부된 도면을 참조하여 기술될 것이다.
도 1은 명확함을 위해 부분들이 절단되고 제거된, 본 발명에 따르는 자동차 휠용 베어링/유닛의 선호되는 실시예를 예시적으로 도시하는 도면.
도 2는 도 1의 상세를 더 확대한 단면도.The invention will now be described with reference to the accompanying drawings which show non-limiting examples of embodiments.
1 illustratively shows a preferred embodiment of a bearing / unit for an automobile wheel according to the invention with parts cut and removed for clarity.
FIG. 2 is an enlarged cross-sectional view of the detail of FIG. 1. FIG.

도 1을 참조하면, 도면부호(1)는 자동차 휠용 베어링/허브 유닛을 나타낸다. Referring to Fig. 1, reference numeral 1 denotes a bearing / hub unit for an automobile wheel.

유닛(1)은 자동차의 서스펜션(도시되지 않음)의 업라이트(upright, 3)에 고정될 수 있으며 베어링의 고정 링인 외측 링(2)을 포함하며, 회전축(A)을 갖는다. 특히, 외측 링(2)은 외측 링(2)은 업라이트(3)의 원통형 시트(4) 내에 고정될 수 있으며, 회전축(A)에 대해 가로방향의 측면 표면(5)에 의해 축방향으로 그리고 축(A)과 동축을 이루는 외측 표면(6)에 의해 반경방향으로 결합된다. The unit 1 can be fixed to an upright 3 of a suspension (not shown) of a motor vehicle and comprises an outer ring 2 which is a fixed ring of a bearing and has a rotation axis A. In particular, the outer ring 2 can be fixed in the cylindrical seat 4 of the outer ring 2, with the outer ring 2 axially and by the lateral surface 5 transverse to the axis of rotation A. It is coupled radially by an outer surface 6 which is coaxial with the axis A.

표면(6)은 시트(4)와 부분적으로 접촉하여 배열되도록 설계되고, 측면 표면(5)에 대해 인접하며 이에 대해 가로방향의 반경방향 하측 부분(7)을 갖는다.The surface 6 is designed to be arranged in partial contact with the seat 4 and has a radially lower portion 7 adjacent to and transverse to the side surface 5.

베어링/허브 유닛은 또한 링(2) 내측에서 반경방향으로 장착되고 축(A) 주위에서 회전가능한 허브(10)를 포함하고, 외측 링(2)과 환형 공동(12)을 형성하도록 소위 "인보드 측면" 또는 축방향의 내측 측면 상에서 하브(10) 상으로 구름으로써 고정되고 베어링의 회전가능한 링인 내측 링(11)을 포함한다.The bearing / hub unit also includes a hub 10 radially mounted inside the ring 2 and rotatable about an axis A, so-called "invoke" to form an annular cavity 12 with the outer ring 2. De side " or an inner ring 11 which is fixed by rolling onto the hub 10 on an axial inner side and which is a rotatable ring of bearings.

외측 링(2)은 각각의 일련의 롤링 요소(14), 이 경우에 볼을 위한 2개의 반경방향의 외측 레이스웨이를 형성하는 반면, 대응하는 반경방향의 내측 레이스웨이(15)는 허브(10)와 내측 링(11)에 의해 각각 형성된다. The outer ring 2 forms each series of rolling elements 14, in this case two radially outer raceways for the ball, while the corresponding radially inner raceway 15 is the hub 10. And inner ring 11 respectively.

축방향의 외측 측면, 또는 소위 유닛(1)의 "아웃보드 측면" 상에서 종래의 밀봉 장치(60)가 허브(10)와 외측 링(2) 사이의 환형 공간을 밀봉하기 위해 제공되며, 이러한 종류의 장치는 환형 공동(12)을 밀봉하기 위하여 유닛(1)의 인보드 측면에 제공되지 않고, 이 공동 내측에서 유닛(1)은 내측 링(11) 상에 장착된 L-형 단면을 갖는 지지 링(20)에 고정된 환형 디스크의 형태인 자성 인코더(magnetic encoder, 16)를 포함한다.A conventional sealing device 60 is provided for sealing the annular space between the hub 10 and the outer ring 2 on the axial outer side, or the so-called "outboard side" of the unit 1, this kind of Is not provided on the inboard side of the unit 1 to seal the annular cavity 12, in which the unit 1 has an L-shaped cross section mounted on the inner ring 11. A magnetic encoder 16 in the form of an annular disk fixed to the ring 20.

지지 링(20)은 내측 링(11)의 외측 원통형 표면(22) 상으로 가압 방식으로 고정되는 원통형 부분(21) 및 원통형 부분(21)으로부터 반경방향의 외측 방향으로 연장되는 플랜지(23)를 갖는다. 인코더(16)는 롤링 요소(14)에 마주보는 플랜지(23)의 측면에서 플랜지(23) 상에 장착되고 외측 링(2)의 내측 원통형 표면(24)의 주변으로 반경방향으로 연장되어 인코더(16)의 부정확한 조립의 경우에 외측 링(2)(비회전식)과 인코더(16)(회전식) 사이의 접촉을 방지하기 위하여 반경방향 슬릿(radial slit, 25)이 형성되고 및/또는 높은 외측 하중, 특히 횡방향 하중이 존재하는 경우 축방향 평면 내에서 베어링을 만곡시키는 경향이 있다.The support ring 20 has a cylindrical portion 21 which is fixed in a pressing manner onto the outer cylindrical surface 22 of the inner ring 11 and a flange 23 extending radially outward from the cylindrical portion 21. Have The encoder 16 is mounted on the flange 23 on the side of the flange 23 facing the rolling element 14 and extends radially around the inner cylindrical surface 24 of the outer ring 2 so that the encoder ( In the case of incorrect assembly of 16, radial slit 25 is formed and / or high outer to prevent contact between outer ring 2 (non-rotary) and encoder 16 (rotary). Loads, in particular lateral loads, tend to bend the bearings in the axial plane.

유닛(1)은 또한 비강자성 재료(예를 들어, 알루미늄, 구리 또는 등)로 제조된 보호 커버(30)를 포함하고, 인코더(16)를 보호하기 위해 인보드 측면상에 장착되어 베어링을 밀봉하고 인코더(16) 자체와 커버(30) 사이에 최소한의 축방향 간격(31)을 형성한다.The unit 1 also includes a protective cover 30 made of a non-ferromagnetic material (eg aluminum, copper or the like) and is mounted on the inboard side to protect the encoder 16 to seal the bearings. And form a minimum axial gap 31 between the encoder 16 itself and the cover 30.

커버(30)는 실질적으로 컵-형 형태를 가지며, 도 1에 도시된 선호되는 실시예에서 부분(31)에 결합된 축방향 원통형 몸체(32)와 외측 링(2)의 측면 표면(5)에 대해 축방향으로 접하는 반경방향 주변 부분(31)을 포함하고, 부분(31)에 결합된 단부에 마주보는 측면에서 자유 환형 외측 변부(33)와 말단을 이룬다.The cover 30 has a substantially cup-shaped shape and in the preferred embodiment shown in FIG. 1 the axial surface of the outer ring 2 and the axial cylindrical body 32 coupled to the part 31. A radially peripheral portion 31 which axially abuts against and forms an end with the free annular outer edge 33 at the side opposite to the end joined to the portion 31.

특히, 몸체(32)는 외측 변부(33)를 향하여 개별적인 방식으로 증가하는 직경을 가지며, In particular, the body 32 has a diameter that increases in an individual manner towards the outer edge 33,

-표면(6)의 반경방향의 하측 부분(7) 상으로 가압방식으로 끼워맞춤되고 부분(31)에 직접 연결된 원통형 부분(34)을 포함하고,A cylindrical portion 34 press-fitted onto the radially lower portion 7 of the surface 6 and connected directly to the portion 31,

-변부(33)에 의해 일 측면에서 경계를 이루는 주어진 축방향 길이의 환형 통로(36)를 형성하기 위하여 부분(34)과 부분(7)에 대해 축방향으로 인접한 부분(35)을 포함한다.A portion 35 axially adjacent to the portion 34 and the portion 7 to form an annular passage 36 of a given axial length bounded on one side by the edge 33.

따라서, 몸체(32)는 연결 부분(38)이 부분(34, 35)에 대해 수직이 될 때까지 일부 각도로부터 최대 90°로 변화될 수 있으며 몸체(32)의 조립 상태에 의존되는 설계 단계에서 형성될 수 있는 기울기로 상기 부분(34, 35)에 대해 기울어져 배열되고, 부분(34, 35)들을 서로 결합하는 연결 부분(38)을 포함한다. Thus, the body 32 may vary from some angle up to 90 ° until the connecting portion 38 is perpendicular to the portions 34 and 35 and in the design stage depending on the assembly state of the body 32. It comprises a connecting portion 38 which is arranged at an angle with respect to the portions 34 and 35 at an inclination which can be formed and which couples the portions 34 and 35 together.

연결 부분(38)은 부분(34, 35)의 축방향 치수보다 작은 축방향 치수로 축(A)을 따라 연장되고, 부분(35)이 반경방향으로 탄성적으로 만곡될 수 있도록 부분(35)에 반경방향의 탄성을 제공한다. 게다가, 부분(38)은 부분(35)에 탄성을 부여하는 동시에 몸체(32)의 구조물의 강성을 보장하여서 반경방향의 하측 부분(7)으로부터 부분(34)의 가능한 분리를 방지하며, 그 후 외측 링(2) 상에 부분(34)을 고정시킨다.The connecting portion 38 extends along the axis A with an axial dimension smaller than the axial dimension of the portions 34, 35, and the portion 35 so that the portion 35 can be elastically curved in the radial direction. To provide radial elasticity. In addition, the portion 38 provides elasticity to the portion 35 while at the same time ensuring the rigidity of the structure of the body 32 to prevent possible separation of the portion 34 from the radially lower portion 7, and thereafter. The part 34 is fixed on the outer ring 2.

따라서, 커버(30)는 베어링의 외측방향 분리를 완료하기 위하여 부분(31)에 결합되고, 허브(10)를 축방향으로 대향한 위치에서 부분(31)에 대해 중심에 그리고 축(A)에 대해 수직으로 배열되는 벽(37)을 포함한다.Thus, the cover 30 is coupled to the part 31 to complete the outward separation of the bearing, and is centered with respect to the part 31 and at the axis A in a position axially opposite the hub 10. It comprises a wall 37 arranged perpendicular to the.

도 2에 더 명확히 도시된 바와 같이, 유닛(1)은 보호 커버(30)의 부분(35)에 결합되는 정적 밀봉 요소(50)를 포함하고, As shown more clearly in FIG. 2, the unit 1 comprises a static sealing element 50 which is coupled to the part 35 of the protective cover 30,

-적어도 부분적으로 충전되는 밀봉 방식으로 통로(36)를 밀폐하기 위하여 외측 링(2)과 보호 커버(30) 사이에 위치된 내측 밀봉 부분(51)을 포함하고,An inner sealing part 51 positioned between the outer ring 2 and the protective cover 30 for sealing the passage 36 in at least partially filled sealing manner,

-업라이트(3)의 시트(4)와 보호 커버(30) 사이에 위치되도록 설계되며 내측 부분(51)의 외측에 반경방향으로 배열된 외측 밀봉 부분(52)을 포함한다.-An outer sealing part 52 which is designed to be positioned between the seat 4 of the upright 3 and the protective cover 30 and which is arranged radially on the outside of the inner part 51.

정적 밀봉 요소(50)는 내측 부분(51) 및 외측 부분(52)을 서로 결합하는 연결 부분(53)을 포함하고, 내측 부분(51) 및 외측 부분(52)과 함께 보호 커버(30)의 변부(33)를 전체적으로 둘러싼다.The static sealing element 50 comprises a connecting part 53 which couples the inner part 51 and the outer part 52 together, and together with the inner part 51 and the outer part 52 of the protective cover 30. It surrounds the edge part 33 as a whole.

내측 부분(51)은 베어링 내측에서 임의의 고체 또는 액체 불순물이 유입되는 것을 방지하기 위하여 통로(36)를 밀봉하는 기능을 가질지라도, 외측 부분(52)은 산화 및/또는 갈바닉 부식으로부터 부분을 보호하기 위하여 커버(30)와 업라이트(3) 사이를 임의의 불순물이 통과하는 것을 방지하는 기능과 업라이트(3)에서 유닛(1)의 단순한 조립을 보장하는 기능 모두를 갖는다. 게다가, 내측 부분(51)은 본 명세서에 예시된 선호되는 실시예에서와 같이 단지 부분적으로 통로(36)를 따라 축방향으로 연장될 수 있거나 또는 연결 부분(38)과 접촉을 이룰 때까지 통로(36)를 따라 완전히 연장될 수 있다.Although the inner portion 51 has the function of sealing the passage 36 to prevent any solid or liquid impurities from entering inside the bearing, the outer portion 52 protects the portion from oxidation and / or galvanic corrosion. To this end it has both the function of preventing any impurities from passing between the cover 30 and the upright 3 and of ensuring the simple assembly of the unit 1 in the upright 3. In addition, the inner portion 51 may extend only axially along the passage 36 or partially in contact with the connecting portion 38, as in the preferred embodiment illustrated herein. Along 36).

연결 부분(53), 내측 부분(51) 및 외측 부분(52)은 업라이트(3)에서 유닛(1)의 용이한 조립을 추가로 향상시키기 위해 서로에 실질적으로 유사한 두께를 가지며, 정적 밀봉 요소(50)는 외측 부분(52)의 외측을 향하여 반경방향으로 연장되고, 외측 부분(52)과 일체구성된 환형 돌출부(54)를 포함한다. 바람직하게는, 환형 돌출부(54)는 회전축(A)에 대해 가로방향의 대칭 평면에 대해 대칭 형태를 갖는다. 본 명세서에 기재된 것으로부터 용이하게 도출가능하지만 예시되지 않은 실시예에 따라서 외측 부분(52)이 연결 부분(38) 까지 그리고 선택적으로 연결 부분(38)을 초과하여 연장되어야 한다면, 환형 돌출부(54)는 더 이상 대칭은 아니지만 전술된 분리 기능이 소실되지 않는 형태를 가질 수 있다.The connecting part 53, the inner part 51 and the outer part 52 have thicknesses substantially similar to each other to further enhance the easy assembly of the unit 1 in the upright 3, and have a static sealing element ( 50 extends radially outward of the outer portion 52 and includes an annular protrusion 54 integral with the outer portion 52. Preferably, the annular projection 54 has a symmetrical shape with respect to the plane of symmetry transverse to the axis of rotation A. FIG. The annular protrusion 54 is provided if the outer portion 52 should extend up to the connecting portion 38 and optionally beyond the connecting portion 38 in accordance with an embodiment not readily exemplified from what is described herein. Is no longer symmetrical but may have a form in which the aforementioned separation function is lost.

연결 부분(53), 내측 부분(51) 및 외측 부분(52)은 동일한 재료, 바람직하게는 탄성중합체 재료로 제조되며, 환형 돌출부(54)는 전술된 부분과 동일한 재료로 제조될 수도 있다. 즉, 전체 정적 밀봉 요소(50)는 바람직하게는 보호 커버(30) 상으로의 직접적인 가황 처리에 의해 단일의 탄성중합체 재료로 제조될 수 있다. The connecting portion 53, the inner portion 51 and the outer portion 52 are made of the same material, preferably an elastomeric material, and the annular protrusion 54 may be made of the same material as the above-mentioned portion. That is, the entire static sealing element 50 may be made of a single elastomeric material, preferably by direct vulcanization onto the protective cover 30.

대안적으로 특정 작동 조건 또는 특정 기하학적 조건으로 인해 부차적인 일이 필요하다면, 환형 돌출부(54)는 부분(51, 52, 53)의 재료와 상이한 재료로 제조될 수 있다. Alternatively, if secondary work is needed due to certain operating conditions or specific geometric conditions, the annular protrusion 54 may be made of a material different from that of the portions 51, 52, 53.

몸체(32)의 아웃보드 측면을 향하여 축방향으로 증가되는 직경을 갖는 형태로 인해, 통로(36)의 반경방향 두께(S)의 크기를 설계 단계에서 측정할 수 있으며, 이에 따라 외측 링(2)에 대해 내측 밀봉 부분(51)의 반경방향 압축력의 우수한 변경이 가능하고, 반경방향의 하측 부분(7)으로부터 부분(34)의 가능한 분리가 방지된다. Due to the shape having an axially increasing diameter towards the outboard side of the body 32, the size of the radial thickness S of the passage 36 can be measured at the design stage and thus the outer ring 2 A good change in the radial compressive force of the inner sealing part 51 is possible, and possible separation of the part 34 from the radially lower part 7 is prevented.

본 명세서에 기재된 것으로부터 용이하게 도출가능하지만 예시되지 않은 실시예에 따라서, 정적 밀봉 요소(50)의 연결 부분(53)은 표면(6)의 나머지 부분과 하측 부분(7)을 연결하는 곡선형 표면(8)과 접촉을 이룰 때까지 변부(33)로부터 축방향으로 연장되는 재료, 바람직하게는 탄성중합체 재료의 러그를 형성하기 위하여 부분(51, 52)의 두께보다 큰 축방향 두께를 가질 수 있다. 러그는 반경방향 및 축방향 모두의 작용에 따라 표면(8)과 접촉을 이루도록 의도되고, 이에 따라 심지어 정적 밀봉 요소(50)의 밀봉 능력이 향상된다.According to an embodiment which is readily derivable from what is described herein but not illustrated, the connecting portion 53 of the static sealing element 50 is curved to connect the lower portion 7 with the rest of the surface 6. It may have an axial thickness that is greater than the thickness of the portions 51, 52 to form a lug of material, preferably an elastomeric material, extending axially from the edge 33 until it makes contact with the surface 8. have. The lug is intended to be in contact with the surface 8 under the action of both radial and axial directions, thus improving the sealing ability of the static sealing element 50 even.

정적 밀봉 요소(50)가 탄성중합체 러그가 제공되는 본 명세서에 기술된 경우에, 변부(33)는 러그 자체에 더 큰 강성을 제공하기 위하여 바람직하게는 반경방향의 외측을 향하여 접힐 수 있다.In the case where the static sealing element 50 is described herein in which an elastomeric lug is provided, the edge 33 may be folded radially outward, preferably to provide greater rigidity to the lug itself.

본 발명이 자동차 휠용 베어링/허브 유닛의 실시예의 예로서 본 명세서에 기술되고 예시된 실시예에 한정되지 않지만 대신에 부분 및 구조적 또는 조립 세부의 형태와 배열에 대해서 추가로 변형될 수 있다.The present invention is not limited to the embodiments described and illustrated herein as examples of embodiments of bearing / hub units for automobile wheels, but may instead be further modified with respect to shapes and arrangements of parts and structural or assembly details.

Claims (9)

회전축(A)을 갖는, 자동차 휠용 베어링/허브 유닛(1)으로서,
-회전축(A)에 대해 가로방향으로 측면 표면(5)에 의해 획정된 고정식 베어링 외측 링(2),
-반경방향의 내측 회전식 허브(10),
-임의의 밀봉 장치가 없는 공동(12)을 외측 링(2)과 함께 형성하고, 허브(10)에 고정된 베어링 내측 링(11),
-내측 링(11) 상의 외측에 고정되고, 공동(12) 내측에 배열된 인코더(16) 및
-공동(12)을 밀폐하고 인코더(16)를 보호하기 위하여 측면 표면(5)에 대해 축방향으로 접하는 방식으로 외측 링(2) 상에 장착되고, 비강자성 재료로 제조된 보호 커버(30)를 포함하고,
베어링/허브 유닛(1)은 보호 커버(30)의 외측 변부(33)에 결합되는 정적 밀봉 요소(50)를 추가로 포함하고, 외측 링(2)과 보호 커버(30) 사이에 위치된 제1 밀봉 부분(51)을 포함하는 것을 특징으로 하는 베어링/허브 유닛.As a bearing / hub unit 1 for an automobile wheel, having a rotation axis A,
A fixed bearing outer ring 2 defined by the side surface 5 transverse to the axis of rotation A,
-Radially inner hub 10,
A bearing inner ring 11 formed with the outer ring 2, with a cavity 12 without any sealing device, fixed to the hub 10,
An encoder 16 fixed to the outside on the inner ring 11 and arranged inside the cavity 12 and
A protective cover 30 made of a non-ferromagnetic material, mounted on the outer ring 2 in a manner axially in contact with the side surface 5 for sealing the cavity 12 and protecting the encoder 16 Including,
The bearing / hub unit 1 further comprises a static sealing element 50 which is coupled to the outer edge 33 of the protective cover 30 and is provided between the outer ring 2 and the protective cover 30. 1 bearing / hub unit, characterized in that it comprises a sealing portion (51). 제1항에 있어서, 정적 밀봉 요소(50)는 업라이트(3) 내에 형성된 외측 링(2)의 고정 시트(4)와 보호 커버(30) 사이에 위치되도록 제1 밀봉 부분(51)의 외측에 반경방향으로 배열된 제2 밀봉 부분(52)을 포함하는 것을 특징으로 하는 베어링/허브 유닛.A static sealing element (50) according to claim 1, wherein the static sealing element (50) is located outside of the first sealing portion (51) so as to be located between the protective cover (30) and the securing seat (4) of the outer ring (2) formed in the upright (3). Bearing / hub unit, characterized in that it comprises a radially arranged second sealing portion (52). 제2항에 있어서, 정적 밀봉 요소(50)는 제1 밀봉 부분(51)과 제2 밀봉 부분(52) 사이에 연결 부분(53)을 포함하고, 연결 부분(53), 제1 밀봉 부분(51) 및 제2 밀봉 부분(52)은 보호 커버(30)의 외측 변부(33)를 전체적으로 둘러싸는 것을 특징으로 하는 베어링/허브 유닛.3. The static sealing element 50 according to claim 2, wherein the static sealing element 50 comprises a connecting portion 53 between the first sealing portion 51 and the second sealing portion 52, and the connecting portion 53, the first sealing portion ( 51) and the second sealing portion (52) entirely surround the outer edge (33) of the protective cover (30). 제2항 또는 제3항에 있어서, 연결 부분(53), 제1 밀봉 부분(51) 및 제2 밀봉 부분(52)은 동일한 재료, 바람직하게는 탄성중합체 재료로 제조되는 것을 특징으로 하는 베어링/허브 유닛.4. Bearings according to claim 2 or 3, characterized in that the connecting part 53, the first sealing part 51 and the second sealing part 52 are made of the same material, preferably an elastomeric material. Hub unit. 제4항에 있어서, 제2 밀봉 부분(52)은 회전축(A)으로부터 반경방향의 외측을 향하여 연장되는 환형 돌출부(54)가 제공되는 것을 특징으로 하는 베어링/허브 유닛.5. Bearing / hub unit according to claim 4, characterized in that the second sealing portion (52) is provided with an annular projection (54) extending radially outward from the axis of rotation (A). 제5항에 있어서, 제2 밀봉 부분(52)은 회전축(A)에 대해 가로방향의 대칭 평면에 대하여 대칭 형태를 갖는 것을 특징으로 하는 베어링/허브 유닛.6. Bearing / hub unit according to claim 5, characterized in that the second sealing portion (52) has a symmetrical shape with respect to the plane of symmetry transverse to the axis of rotation (A). 제5항 또는 제6항에 있어서, 환형 돌출부(54)는 제2 밀봉 부분(52)과 동일한 재료로 제조되는 것을 특징으로 하는 베어링/허브 유닛.7. Bearing / hub unit according to claim 5 or 6, characterized in that the annular projection (54) is made of the same material as the second sealing portion (52). 제7항에 있어서, 보호 커버(30)는 외측 변부(33)를 향하여 개별적인 방식으로 증가되는 직경을 갖는 마운팅 몸체(32)를 포함하고, 마운팅 몸체(32)는 주어진 축방향 길이의 환형 통로(36)를 형성하기 위하여 외측 링(2)에 대해 반경방향으로 상승된 부분(35) 및 외측 링(2)에 고정된 부분(34)을 포함하는 것을 특징으로 하는 베어링/허브 유닛.8. The protective cover 30 comprises a mounting body 32 having a diameter that is increased in an individual manner towards the outer edge 33, the mounting body 32 having an annular passage of a given axial length (8). Bearing / hub unit, characterized in that it comprises a portion (35) which is radially raised relative to the outer ring (2) and a portion (34) fixed to the outer ring (2) to form 36). 제8항에 있어서, 마운팅 몸체(32)는 부분(34)과 상승된 부분(35)을 서로 결합하는 연결 부분(38)을 포함하고, 일부 각도로부터 최대 90°로 변화할 수 있는 기울기로 상승된 부분(35)과 부분(34)에 대해 기울어진 상태로 배열되는 것을 특징으로 하는 베어링/허브 유닛.9. The mounting body (32) according to claim 8, wherein the mounting body (32) comprises a connecting portion (38) for coupling the portion (34) and the raised portion (35) to each other, and ascending at an inclination that can vary up to 90 degrees from some angle. Bearing / hub unit, characterized in that it is arranged in an inclined state relative to the part 35 and the part 34.
KR1020110127399A 2010-12-16 2011-12-01 Bearing/hub unit for a motor-vehicle wheel KR20120067935A (en)

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IT001005A ITTO20101005A1 (en) 2010-12-16 2010-12-16 HUB-BEARING GROUP FOR THE WHEEL OF A MOTOR VEHICLE

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CN102562814A (en) 2012-07-11
US8657503B2 (en) 2014-02-25
US20120155795A1 (en) 2012-06-21
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ITTO20101005A1 (en) 2012-06-17
EP2466161A1 (en) 2012-06-20

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